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tidb/tests/integrationtest/r/executor/index_lookup_join.result

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drop table if exists t1;
drop table if exists t2;
create table t1(id int primary key, a int);
create table t2(id int primary key, a int, b int, key idx_a(a));
insert into t2 values (1,1,1),(4,2,4);
begin;
insert into t1 values(2,2);
insert into t2 values(2,2,2), (3,3,3);
select /*+ INL_JOIN(t1, t2)*/ * from t1 join t2 on t1.a = t2.id;
id a id a b
2 2 2 2 2
select /*+ INL_HASH_JOIN(t1, t2)*/ * from t1 join t2 on t1.a = t2.id;
id a id a b
2 2 2 2 2
select /*+ INL_MERGE_JOIN(t1, t2)*/ * from t1 join t2 on t1.a = t2.id;
id a id a b
2 2 2 2 2
select /*+ INL_JOIN(t1, t2)*/ * from t1 join t2 on t1.a = t2.a;
id a id a b
2 2 2 2 2
2 2 4 2 4
select /*+ INL_HASH_JOIN(t1, t2)*/ * from t1 join t2 on t1.a = t2.a;
id a id a b
2 2 2 2 2
2 2 4 2 4
select /*+ INL_MERGE_JOIN(t1, t2)*/ * from t1 join t2 on t1.a = t2.a;
id a id a b
2 2 2 2 2
2 2 4 2 4
select /*+ INL_JOIN(t1, t2)*/ t1.a, t2.a from t1 join t2 on t1.a = t2.a;
a a
2 2
2 2
select /*+ INL_HASH_JOIN(t1, t2)*/ t1.a, t2.a from t1 join t2 on t1.a = t2.a;
a a
2 2
2 2
select /*+ INL_MERGE_JOIN(t1, t2)*/ t1.a, t2.a from t1 join t2 on t1.a = t2.a;
a a
2 2
2 2
rollback;
drop table if exists t1;
drop table if exists t2;
create table t1(id int primary key, a int);
create table t2(id int primary key, a int, key idx_a(a));
set @@session.tidb_init_chunk_size=1;
set @@session.tidb_index_join_batch_size=1;
set @@session.tidb_index_lookup_join_concurrency=4;
begin;
insert into t1 values(1,1),(2,1),(3,1),(4,1);
insert into t2 values(1,1);
select /*+ INL_JOIN(t1, t2)*/ count(*) from t1 join t2 on t1.a = t2.id;
count(*)
4
select /*+ INL_HASH_JOIN(t1, t2)*/ count(*) from t1 join t2 on t1.a = t2.id;
count(*)
4
select /*+ INL_MERGE_JOIN(t1, t2)*/ count(*) from t1 join t2 on t1.a = t2.id;
count(*)
4
rollback;
set @@session.tidb_init_chunk_size=default;
set @@session.tidb_index_join_batch_size=default;
set @@session.tidb_index_lookup_join_concurrency=default;
drop table if exists t1, t2;
create table t1(a bigint, b bigint);
create table t2(a bigint, b bigint);
select /*+ TIDB_INLJ(t1, t2) */ * from t1, t2;
a b a b
show warnings;
Level Code Message
Warning 1815 Optimizer Hint /*+ INL_JOIN(t1, t2) */ or /*+ TIDB_INLJ(t1, t2) */ is inapplicable without column equal ON condition
select /*+ TIDB_INLJ(t1, t2) */ * from t1 join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 Optimizer Hint /*+ INL_JOIN(t1, t2) */ or /*+ TIDB_INLJ(t1, t2) */ is inapplicable
select /*+ INL_HASH_JOIN(t1, t2) */ * from t1, t2;
a b a b
show warnings;
Level Code Message
Warning 1815 Optimizer Hint /*+ INL_HASH_JOIN(t1, t2) */ is inapplicable without column equal ON condition
select /*+ INL_HASH_JOIN(t1, t2) */ * from t1 join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 Optimizer Hint /*+ INL_HASH_JOIN(t1, t2) */ is inapplicable
select /*+ INL_MERGE_JOIN(t1, t2) */ * from t1, t2;
a b a b
show warnings;
Level Code Message
Warning 1815 The INDEX MERGE JOIN hint is deprecated for usage, try other hints.
select /*+ INL_MERGE_JOIN(t1, t2) */ * from t1 join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 The INDEX MERGE JOIN hint is deprecated for usage, try other hints.
drop table if exists t1, t2;
create table t1(a bigint, b bigint, index idx_a(a));
create table t2(a bigint, b bigint);
select /*+ TIDB_INLJ(t1) */ * from t1 left join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 Optimizer Hint /*+ INL_JOIN(t1) */ or /*+ TIDB_INLJ(t1) */ is inapplicable
select /*+ TIDB_INLJ(t2) */ * from t1 right join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 Optimizer Hint /*+ INL_JOIN(t2) */ or /*+ TIDB_INLJ(t2) */ is inapplicable
select /*+ INL_HASH_JOIN(t1) */ * from t1 left join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 Optimizer Hint /*+ INL_HASH_JOIN(t1) */ is inapplicable
select /*+ INL_HASH_JOIN(t2) */ * from t1 right join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 Optimizer Hint /*+ INL_HASH_JOIN(t2) */ is inapplicable
select /*+ INL_MERGE_JOIN(t1) */ * from t1 left join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 The INDEX MERGE JOIN hint is deprecated for usage, try other hints.
select /*+ INL_MERGE_JOIN(t2) */ * from t1 right join t2 on t1.a=t2.a;
a b a b
show warnings;
Level Code Message
Warning 1815 The INDEX MERGE JOIN hint is deprecated for usage, try other hints.
drop table if exists t1, t2;
create table t1 (a int, key(a));
create table t2 (a int, key(a));
explain select /*+ tidb_inlj(bb) */ aa.* from (select * from t1) as aa left join
(select t2.a, t2.a*2 as a2 from t2) as bb on aa.a=bb.a;
id estRows task access object operator info
IndexJoin_13 12487.50 root left outer join, inner:IndexReader_12, outer key:executor__index_lookup_join.t1.a, inner key:executor__index_lookup_join.t2.a, equal cond:eq(executor__index_lookup_join.t1.a, executor__index_lookup_join.t2.a)
├─IndexReader_24(Build) 10000.00 root index:IndexFullScan_23
│ └─IndexFullScan_23 10000.00 cop[tikv] table:t1, index:a(a) keep order:false, stats:pseudo
└─IndexReader_12(Probe) 12487.50 root index:Selection_11
└─Selection_11 12487.50 cop[tikv] not(isnull(executor__index_lookup_join.t2.a))
└─IndexRangeScan_10 12500.00 cop[tikv] table:t2, index:a(a) range: decided by [eq(executor__index_lookup_join.t2.a, executor__index_lookup_join.t1.a)], keep order:false, stats:pseudo
drop table if exists t1, t2;
create table t1(a int);
insert into t1 values (-1);
create table t2(a int unsigned, index idx(a));
select /*+ INL_JOIN(t2) */ * from t1 join t2 on t1.a = t2.a;
a a
select /*+ INL_HASH_JOIN(t2) */ * from t1 join t2 on t1.a = t2.a;
a a
select /*+ INL_MERGE_JOIN(t2) */ * from t1 join t2 on t1.a = t2.a;
a a
drop table if exists t1;
create table t1(c varchar(30), index ix_c(c(10)));
insert into t1 (c) values('7_chars'), ('13_characters');
SELECT /*+ INL_JOIN(t1) */ SUM(LENGTH(c)) FROM t1 WHERE c IN (SELECT t1.c FROM t1);
SUM(LENGTH(c))
20
SELECT /*+ INL_HASH_JOIN(t1) */ SUM(LENGTH(c)) FROM t1 WHERE c IN (SELECT t1.c FROM t1);
SUM(LENGTH(c))
20
SELECT /*+ INL_MERGE_JOIN(t1) */ SUM(LENGTH(c)) FROM t1 WHERE c IN (SELECT t1.c FROM t1);
SUM(LENGTH(c))
20
drop table if exists t;
create table t(a int, b int not null, c int, key idx(c)) partition by hash(b) partitions 30;
insert into t values(1, 27, 2);
SELECT /*+ INL_JOIN(t1) */ count(1) FROM t t1 INNER JOIN (SELECT a, max(c) AS c FROM t WHERE b = 27 AND a = 1 GROUP BY a) t2 ON t1.a = t2.a AND t1.c = t2.c WHERE t1.b = 27;
count(1)
1
SELECT /*+ INL_HASH_JOIN(t1) */ count(1) FROM t t1 INNER JOIN (SELECT a, max(c) AS c FROM t WHERE b = 27 AND a = 1 GROUP BY a) t2 ON t1.a = t2.a AND t1.c = t2.c WHERE t1.b = 27;
count(1)
1
SELECT /*+ INL_MERGE_JOIN(t1) */ count(1) FROM t t1 INNER JOIN (SELECT a, max(c) AS c FROM t WHERE b = 27 AND a = 1 GROUP BY a) t2 ON t1.a = t2.a AND t1.c = t2.c WHERE t1.b = 27;
count(1)
1
drop table if exists t1, t2;
create table t1(a int not null, b int not null, key idx_a_b(a,b));
create table t2(a int not null, b int not null);
insert into t1 values (0,1), (0,2), (0,3);
insert into t2 values (0,1), (0,2), (0,3);
select /*+ TIDB_INLJ(t1) */ count(*) from t1, t2 where t1.a = t2.a and t1.b < t2.b;
count(*)
3
drop table if exists t;
drop table if exists i;
drop table if exists p1;
drop table if exists p2;
CREATE TABLE p1 (type enum('HOST_PORT') NOT NULL, UNIQUE KEY (type)) ;
CREATE TABLE p2 (type set('HOST_PORT') NOT NULL, UNIQUE KEY (type)) ;
CREATE TABLE i (objectType varchar(64) NOT NULL);
insert into i values ('SWITCH');
create table t like i;
insert into t values ('HOST_PORT');
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into t select * from t;
insert into i select * from t;
insert into p1 values('HOST_PORT');
insert into p2 values('HOST_PORT');
select /*+ INL_HASH_JOIN(p1) */ * from i, p1 where i.objectType = p1.type;
objectType type
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
show warnings;
Level Code Message
select /*+ INL_JOIN(p1) */ * from i, p1 where i.objectType = p1.type;
objectType type
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
show warnings;
Level Code Message
select /*+ INL_HASH_JOIN(p2) */ * from i, p2 where i.objectType = p2.type;
objectType type
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
show warnings;
Level Code Message
select /*+ INL_JOIN(p2) */ * from i, p2 where i.objectType = p2.type;
objectType type
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
HOST_PORT HOST_PORT
show warnings;
Level Code Message
drop table if exists t;
create table t (a int, b char(10), c blob, primary key (c(5)) clustered);
insert into t values (20301,'Charlie',x'7a');
select * from t;
a b c
20301 Charlie z
select * from t where c in (select c from t where t.c >= 'a');
a b c
20301 Charlie z
select @@last_sql_use_alloc;
@@last_sql_use_alloc
0
drop table if exists t;
create table t (a int, b char(10), c varchar(255), primary key (c(5)) clustered);
insert into t values (20301,'Charlie','aaaaaaa');
select @@last_sql_use_alloc;
@@last_sql_use_alloc
1
select * from t;
a b c
20301 Charlie aaaaaaa
select * from t where c in (select c from t where t.c >= 'a');
a b c
20301 Charlie aaaaaaa
select @@last_sql_use_alloc;
@@last_sql_use_alloc
1
drop table if exists t;
CREATE TABLE t (
col_15 decimal(49,3),
col_16 smallint(5),
col_17 char(118) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT 'tLOOjbIXuuLKPFjkLo',
col_18 set('Alice','Bob','Charlie','David') NOT NULL,
col_19 tinyblob,
PRIMARY KEY (col_19(5),col_16) /*T![clustered_index] NONCLUSTERED */,
UNIQUE KEY idx_10 (col_19(5),col_16)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
INSERT INTO `t` VALUES (38799.400,20301,'KETeFZhkoxnwMAhA','Charlie',x'7a7968584570705a647179714e56');
select t.* from t where col_19 in ( select col_19 from t where t.col_18 <> 'David' and t.col_19 >= 'jDzNn' ) order by col_15 , col_16 , col_17 , col_18 , col_19;
col_15 col_16 col_17 col_18 col_19
38799.400 20301 KETeFZhkoxnwMAhA Charlie zyhXEppZdqyqNV
set tidb_cost_model_version=1;
drop table if exists t1,t2;
set @@tidb_partition_prune_mode=dynamic;
CREATE TABLE t1 (
id int(10) unsigned NOT NULL,
pc int(10) unsigned NOT NULL,
PRIMARY KEY (id,pc) /*T![clustered_index] CLUSTERED */
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
PARTITION BY HASH( pc )
PARTITIONS 1;
CREATE TABLE t2 (
prefiller bigint(20) NOT NULL,
pk tinyint(3) unsigned NOT NULL,
postfiller bigint(20) NOT NULL,
PRIMARY KEY (pk) /*T![clustered_index] CLUSTERED */
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin ;
insert into t2 values ( pow(2,32), 1, 1), ( pow(2,32)+1, 2, 0);
analyze table t1 all columns;
analyze table t2 all columns;
explain format='brief' select /* +INL_JOIN(t1,t2) */ t1.id, t1.pc from t1 where id in ( select prefiller from t2 where t2.postfiller = 1 );
id estRows task access object operator info
IndexJoin 1.25 root inner join, inner:TableReader, outer key:executor__index_lookup_join.t2.prefiller, inner key:executor__index_lookup_join.t1.id, equal cond:eq(executor__index_lookup_join.t2.prefiller, executor__index_lookup_join.t1.id)
├─HashAgg(Build) 1.00 root group by:executor__index_lookup_join.t2.prefiller, funcs:firstrow(executor__index_lookup_join.t2.prefiller)->executor__index_lookup_join.t2.prefiller
│ └─TableReader 1.00 root data:HashAgg
│ └─HashAgg 1.00 cop[tikv] group by:executor__index_lookup_join.t2.prefiller,
│ └─Selection 1.00 cop[tikv] eq(executor__index_lookup_join.t2.postfiller, 1)
│ └─TableFullScan 2.00 cop[tikv] table:t2 keep order:false
└─TableReader(Probe) 1.00 root partition:all data:TableRangeScan
└─TableRangeScan 1.00 cop[tikv] table:t1 range: decided by [eq(executor__index_lookup_join.t1.id, executor__index_lookup_join.t2.prefiller)], keep order:false, stats:pseudo
show warnings;
Level Code Message
select /* +INL_JOIN(t1,t2) */ t1.id, t1.pc from t1 where id in ( select prefiller from t2 where t2.postfiller = 1 );
id pc
drop table t1, t2;
set @@tidb_partition_prune_mode=default;
set tidb_cost_model_version=default;
drop table if exists t1;
drop table if exists t2;
create table t1 (a enum('x','y'));
create table t2 (a int, key(a));
insert into t1 values('x');
insert into t2 values(1);
select /*+ inl_join(t2) */ count(*) from t1 join t2 on t1.a = t2.a;
count(*)
1
select @@last_sql_use_alloc;
@@last_sql_use_alloc
1
select /*+ inl_hash_join(t2) */ count(*) from t1 join t2 on t1.a = t2.a;
count(*)
1
select @@last_sql_use_alloc;
@@last_sql_use_alloc
1
drop table if exists a,b;
CREATE TABLE `a` (
`v` varchar(100) DEFAULT NULL,
`k1` varchar(100) NOT NULL,
`k2` varchar(100) NOT NULL,
PRIMARY KEY (`k1`(3),`k2`(3)) /*T![clustered_index] CLUSTERED */,
KEY `kk2` (`k2`(3)),
UNIQUE KEY `uk1` (`v`)
);
CREATE TABLE `b` (
`v` varchar(100) DEFAULT NULL,
`k1` varchar(100) NOT NULL,
`k2` varchar(100) NOT NULL,
PRIMARY KEY (`k1`(3),`k2`(3)) /*T![clustered_index] CLUSTERED */,
KEY `kk2` (`k2`(3))
);
insert into a(v, k1, k2) values('1', '1', '1'), ('22', '22', '22'), ('333', '333', '333'), ('3444', '3444', '3444'), ('444', '444', '444');
insert into b(v, k1, k2) values('1', '1', '1'), ('22', '22', '22'), ('333', '333', '333'), ('2333', '2333', '2333'), ('555', '555', '555');
delete a from a inner join b on a.k1 = b.k1 and a.k2 = b.k2 where b.k2 <> '333';
drop table if exists t1,t2;
create table t1 (c_int int, primary key (c_int));
create table t2 (c_int int, primary key (c_int)) partition by hash (c_int) partitions 4;
insert into t1 values (1);
insert into t2 values (1);
begin;
insert into t1 values (2);
insert into t2 values (2);
select /*+ INL_JOIN(t1,t2) */ * from t1 left join t2 on t1.c_int = t2.c_int;
c_int c_int
1 1
2 2
commit;
drop table if exists t1, t2;
create table t1 (c_int int, c_str varchar(40), primary key(c_str), unique key(c_int), unique key(c_str));
create table t2 (c_int int, c_str varchar(40), primary key(c_int, c_str(4)), key(c_int), unique key(c_str));
insert into t1 values (1, 'cool buck'), (2, 'reverent keller');
insert into t2 select * from t1;
select /*+ inl_join(t2) */ * from t1, t2 where t1.c_str = t2.c_str and t1.c_int = t2.c_int and t1.c_int = 2;
c_int c_str c_int c_str
2 reverent keller 2 reverent keller
drop table if exists t1, t2;
create table t1 (c_int int, c_str varchar(40), primary key(c_int, c_str(4)));
create table t2 like t1;
insert into t1 values (1, 'clever jang'), (2, 'blissful aryabhata');
insert into t2 select * from t1;
select /*+ inl_join(t2) */ * from t1 join t2 on t1.c_str = t2.c_str where t1.c_int = t2.c_int;
c_int c_str c_int c_str
1 clever jang 1 clever jang
2 blissful aryabhata 2 blissful aryabhata
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